GA rename: Threat Hunting Assistant

[Sentinel-ASH]

Summary

• Rename Threat Hunting Agent to Threat Hunting Assistant for GA
• Update related links/slug references
• Remove preview labeling for this feature where present

GA coordination

Draft PR for review only. Do not merge or publish before Aug 5 GA approval.

Validation

• Text-only documentation updates

[learn-build-service-prod]

Learn Build status updates of commit 9e3693d:

⚠️ Validation status: warnings

File	Status	Preview URL	Details
defender-xdr/security-copilot-agents-defender.md	⚠️Warning		Details
.openpublishing.redirection.defender-xdr.json	✅Succeeded
defender-xdr/advanced-hunting-security-copilot-query-assistant.md	✅Succeeded
defender-xdr/advanced-hunting-security-copilot-threat-hunting-agent.md	✅Succeeded	n/a (file deleted or renamed)
defender-xdr/advanced-hunting-security-copilot-threat-hunting-assistant.md	✅Succeeded
defender-xdr/advanced-hunting-security-copilot.md	✅Succeeded
defender-xdr/TOC.yml	✅Succeeded
defender-xdr/whats-new.md	✅Succeeded
sentinel/microsoft-sentinel-defender-portal.md	✅Succeeded

defender-xdr/security-copilot-agents-defender.md

• Line 73, Column 3: [Warning: bookmark-not-found - See documentation] Cannot find bookmark '#threat-hunting-agent' in 'security-copilot-agents-defender.md'.

For more details, please refer to the build report.

Note: Your PR may contain errors or warnings or suggestions unrelated to the files you changed. This happens when external dependencies like GitHub alias, Microsoft alias, cross repo links are updated. Please use these instructions to resolve them.

[v-dirichards]

@Sentinel-ASH

Thank you for your contribution. Would you take a moment to sign the Contributor License Agreement (CLA)? After the CLA is signed, someone can review your pull request. Thanks!

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